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2026-08-18 - 09:10
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Data to construct the above plot have been generated using the RT test utility cyclictest.
Unexpectedly long latencies may be caused by SMIs
Total number of samples: 100 million
Resolution of latency scale: normal
Duration: 5 hours, 33 minutes, lowest P state: performance
Characteristics of the 20 highest latencies:
System rack6slot0.osadl.org (updated Tue Aug 18, 2026 01:01:42)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
719699270266,2cyclictest16180-21kworker/u81:5+events_unbound21:36:241
719699270266,2cyclictest16180-21kworker/u81:5+events_unbound21:36:231
721199258252,4cyclictest38323-21sh21:36:245
721199258252,4cyclictest38323-21sh21:36:245
719799241227,11cyclictest13893-21kworker/u81:3+events_unbound23:51:2512
719799241227,11cyclictest13893-21kworker/u81:3+events_unbound23:51:2512
719799238231,5cyclictest0-21swapper/200:00:2712
719799238231,5cyclictest0-21swapper/200:00:2712
719799238231,5cyclictest0-21swapper/200:00:2612
719799238220,14cyclictest0-21swapper/221:35:1612
719799238220,14cyclictest0-21swapper/221:35:1512
719799237227,7cyclictest0-21swapper/200:05:2112
719799237227,7cyclictest0-21swapper/200:05:2112
719799235222,10cyclictest0-21swapper/223:01:3812
719799235222,10cyclictest0-21swapper/223:01:3812
719799234229,4cyclictest0-21swapper/223:24:1712
719799234229,4cyclictest0-21swapper/223:24:1712
719799234223,5cyclictest0-21swapper/222:40:2112
719799234223,5cyclictest0-21swapper/222:40:2112
719799234222,9cyclictest0-21swapper/223:40:1312
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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